R38 burned on maytronics 2410110LF rev 03

hi, anyone know the value of this R38 resistor? it's the resistor connected with a diode M4

Comments for R38 burned on maytronics 2410110LF rev 03

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Jan 02, 2024
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starstarstarstarstar 		Thanks
by: Nigel Franklin

Thanks to this thread I was able to repair our Dolphin M400 pool robot.

It was not functioning and I found a burnt out R38 resistor and found that the brushes in the impeller motor were worn out, probably causing a high current and the R38 resistor to burn out.

I replaced with an 18ohm 1W 5% carbon film resistor. I soldered the new resistor approx 10mm from the board to give it better heat disspation and in the event that it does burn out again to reduce damage to the PCB. I replaced the brushes with '5mm x 6mm x 14mm Carbon Brushes' from AliExpress - https://www.aliexpress.com/item/1005002349649958.html

I diagnosed the worn brushes from running the motor at 17.5VDC on a bench power supply and it felt really erratic, not smooth running & drawing around 1.5A. With new brushes it runs smooth and draws a steady 1.1A . Note - don't run the motor dry for too long to avoid damaging the shaft seals.

Board information:

NEW DYN PRM
MAYTRONICS
2410110LF-01

DYN PREMIUM NEW
2017
A835
Aug 26, 2023
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starstarstarstarstar 		2410110LF rev 4
by: magnetb0y

In a similar situation with my 2410110LF rev 4, Burned R38 cap and Burned U15 chip. I don't see much difference between rev 3 and 4. Has anyone had any luck getting one of these fixed?
Nov 18, 2022
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starstarstarstarstar 		R value
by: Anonymous

Mine is rev-01 with R38 as brown grey black gold brown
Feb 24, 2022
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starstarstarstarstar 		Dynamic premium Maytronics 2410110LF REV 03
by: Andres Escobar

hello, best regards, where can I buy this card...Dynamic premium Maytronics 2410110LF
REV 03
atte: Andres Escobar +58 4127420315
Mar 24, 2021
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starstarstarstarstar 		the r 38
by: plölers

did it fix it ?
Mar 24, 2021
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starstarstarstarstar 		maytronics 2410110LF
by: plölers

i have the same ,can someone help

thanks

Jun 22, 2020
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starstarstarstarstar 		R38
by: Tom M

I have a burned R38 on a Maytronics 2410073LF Circuit Board. It is 18 ohm 1% 1/4 watt. I do not see a diode nearby. this is a 2011 board.

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